<template>
  <div>
    <!-- 面包屑导航栏 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>商品列表</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片 -->
    <el-card class="box-card">
      <!-- 步骤条 -->
      <el-alert title="添加商品信息" type="info" :closable="false" center show-icon> </el-alert>
      <el-steps :active="activeIndex - 0" finish-status="success" process-status="finish" align-center>
        <el-step title="基本信息"></el-step>
        <el-step title="商品参数"></el-step>
        <el-step title="商品属性"></el-step>
        <el-step title="商品图片"></el-step>
        <el-step title="商品内容"></el-step>
        <el-step title="完成"></el-step>
      </el-steps>
      <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="100px">
        <!-- 标签页 -->
        <el-tabs v-model="activeIndex" tab-position="left" :before-leave="beforeTagLeave" @tab-click="tabClicked">
          <el-tab-pane label="基本信息" name="0">
            <el-form-item label="商品名称" prop="goods_name">
              <el-input v-model="addForm.goods_name"></el-input>
            </el-form-item>
            <el-form-item label="商品价格" prop="goods_price">
              <el-input v-model.number="addForm.goods_price"></el-input>
            </el-form-item>
            <el-form-item label="商品重量" prop="goods_weight">
              <el-input v-model.number="addForm.goods_weight"></el-input>
            </el-form-item>
            <el-form-item label="商品数量" prop="goods_number">
              <el-input v-model.number="addForm.goods_number"></el-input>
            </el-form-item>
            <el-form-item label="商品分类">
              <el-cascader v-model="addForm.goods_cat" :options="cateList" :props="cascaderProps" @change="handleChange" clearable></el-cascader>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品参数" name="1">
            <el-form-item v-for="item in manyData" :key="item.attr_id" :label="item.attr_name">
              <el-checkbox-group v-model="item.attr_vals">
                <el-checkbox v-for="(value, index) in item.attr_vals" :key="index" :label="value" border=""></el-checkbox>
              </el-checkbox-group>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品属性" name="2">
            <el-form-item v-for="item in onlyData" :key="item.attr_id" :label="item.attr_name" label-width="200px">
              <el-input v-model="item.attr_vals"></el-input>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品图片" name="3">
            <!-- action图片要上传的后台地址 -->
            <el-upload :action="uploadURL" :on-preview="handlePreview" :on-remove="handleRemove" list-type="picture" :headers="headerObj" :on-success="handleSuccess">
              <el-button size="small" type="primary">点击上传</el-button>
            </el-upload>
          </el-tab-pane>
          <el-tab-pane label="商品内容" name="4">
            <quill-editor v-model="addForm.goods_introduce" />
            <el-button type="primary" class="addBtn" @click="addGoods()">添加商品</el-button>
          </el-tab-pane>
        </el-tabs>
      </el-form>
      <!-- 图片预览 -->
      <el-dialog title="图片预览" :visible.sync="previewVisible" width="50%">
        <img :src="previewPath" class="previewImg" />
      </el-dialog>
    </el-card>
  </div>
</template>

<script>
import _ from 'lodash'
export default {
  data() {
    return {
      activeIndex: '0',
      addForm: {
        goods_name: '',
        goods_price: null,
        goods_weight: null,
        goods_number: null,
        goods_cat: [],
        pics: [],
        goods_introduce: '',
        attrs:[]
      },
      addFormRules: {
        goods_name: [{ required: true, message: '请输入商品名称', trigger: 'blur' }],
        goods_price: [
          { required: true, message: '请输入商品价格', trigger: 'blur' },
          { type: 'number', message: '请输入数字' },
        ],
        goods_weight: [
          { required: true, message: '请输入商品重量', trigger: 'blur' },
          { type: 'number', message: '请输入数字' },
        ],
        goods_number: [
          { required: true, message: '请输入商品数量', trigger: 'blur' },
          { type: 'number', message: '请输入数字' },
        ],
      },
      cateList: [],
      cascaderProps: {
        label: 'cat_name',
        value: 'cat_id',
        children: 'children',
        expandTrigger: 'hover',
      },
      manyData: [],
      onlyData: [],
      uploadURL: 'http://www.tangxiaoyang.vip:8888/api/v2/upload',
      headerObj: {
        Authorization: JSON.parse(sessionStorage.getItem('userInfo')).token,
      },
      previewVisible: false,
      previewPath: '',
    }
  },
  created() {
    this.getCateList()
  },
  methods: {
    async getCateList() {
      const { data: res } = await this.$http.get('categories')
      if (res.meta.status !== 200) {
        return this.$message.error('获取商品分类失败！')
      }
      this.cateList = res.data
    },
    handleChange() {
      if (this.addForm.goods_cat.length !== 3) {
        this.addForm.goods_cat = []
      }
    },
    beforeTagLeave(activeName, oldActiveName) {
      if (this.addForm.goods_cat.length !== 3) {
        this.$message.error('请先选择商品分类')
        return false
      }
    },
    async tabClicked() {
      // 判断是动态参数还是静态属性
      if (this.activeIndex === '1') {
        const { data: res } = await this.$http.get('categories/' + this.cateId + '/attributes', {
          params: { sel: 'many' },
        })
        if (res.meta.status !== 200) {
          return this.$message.error('获取动态参数失败！')
        }
        res.data.forEach((item) => {
          item.attr_vals = item.attr_vals ? item.attr_vals.split(' ') : []
        })
        this.manyData = res.data
        console.log(this.manyData)
      } else if (this.activeIndex === '2') {
        const { data: res } = await this.$http.get('categories/' + this.cateId + '/attributes', {
          params: { sel: 'only' },
        })
        if (res.meta.status !== 200) {
          return this.$message.error('获取静态属性失败！')
        }
        this.onlyData = res.data
      }
    },

    // 图片
    handlePreview(file) {
      this.previewPath = file.url
      this.previewVisible = true
    },
    handleRemove(file) {
      console.log(file)
      const filePath = file.response.data.tmp_path
      const index = this.addForm.pics.findIndex((item) => {
        item.pic === filePath
      })
      this.addForm.pics.splice(index, 1)
      console.log(this.addForm.pics)
    },
    handleSuccess(response) {
      this.addForm.pics.push({
        pic: response.data.tmp_path,
      })
      console.log(this.addForm)
    },
    addGoods(){
      this.$refs.addFormRef.validate(async valid =>{
        if(!valid){
          return
        }
        // 深拷贝
        const form = _.cloneDeep(this.addForm)
        form.goods_cat = form.goods_cat.join(',')
        this.manyData.forEach(item=>{
          form.attrs.push({
            attr_id:item.attr_id,
            attr_value:item.attr_vals.join(' ')
          })
        })
        this.onlyData.forEach(item=>{
          form.attrs.push({
            attr_id:item.attr_id,
            attr_value:item.attr_vals
          })
        })
        const {data:res} = await this.$http.post('goods',form)
        if (res.meta.status !== 201) {
          return this.$message.error('添加商品失败！')
        }
        this.$message.success('添加商品成功！')
        this.$router.push('/goods')
      })
    }
  },
  computed: {
    cateId() {
      return this.addForm.goods_cat.length === 3 ? this.addForm.goods_cat[2] : null
    },
  },
}
</script>

<style lang="less" scoped>
.el-steps {
  margin-top: 15px;
  margin-bottom: 15px;
}
.el-checkbox {
  margin-left: 10px;
}
.el-input {
  width: 500px;
}
.previewImg {
  width: 100%;
}
.addBtn{
  margin-top: 15px;
}
</style>

<style>
.ql-container{
  min-height: 300px;
}
</style>
